In the given figure,the voltage of point $A$ is ............ $V$.

Assuming that the junction diode is ideal, the current in the arrangement shown in the figure is: (in $\text{mA}$)

The $V-I$ characteristic of a diode is shown in the figure. The ratio of forward to reverse bias resistance is

$A$ $PN-$ junction has a thickness of the order of

The junction diode in the following circuit requires a minimum current of $1 \, mA$ to be above the knee point $(0.7 \, V)$ of its $I-V$ characteristic curve. The voltage across the diode is independent of current above the knee point. If $V_B = 5 \, V$,then the maximum value of $R$ so that the voltage is above the knee point will be:

Identify the solar cell characteristics from the following options.